Chinghai (?t????ha?) or Ch’ing-hain (Placename) a variant transliteration of the Chinese name for QinghaiCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014Qing?hai or Ch’ing?hai (?t????ha?) n. 1. a province in NW China. 4,740,000; 278,400 sq. mi. (721,000 sq. km). Cap.: Xining. 2. Also called Koko Nor. a salt lake in NE Qinghai province. 2300 sq. mi. (5950 sq. km). Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.